Doodlebrary

Doodlebrary

• There are over 3,000 known isotopes of elements, and many of them are radioactive to some extent.
• However, the term “radioactive elements” typically refers to elements whose most stable isotopes are radioactive.
• Here is a list of some of the most well-known radioactive elements:

1. Uranium (U) – Uranium-235 (U-235) and Uranium-238 (U-238) are the most common radioactive isotopes of uranium.
2. Thorium (Th) – Thorium-232 (Th-232) is the most stable and commonly found radioactive isotope of thorium.
3. Radium (Ra) – Radium-226 (Ra-226) is the most famous radioactive isotope of radium.
4. Polonium (Po) – Polonium-210 (Po-210) is a well-known radioactive isotope.
5. Radon (Rn) – Radon-222 (Rn-222) is a naturally occurring radioactive gas.
6. Plutonium (Pu) – Plutonium-239 (Pu-239) is a fissile material used in nuclear reactors and weapons.
7. Cesium (Cs) – Cesium-137 (Cs-137) is a radioactive isotope often produced in nuclear accidents.
8. Strontium (Sr) – Strontium-90 (Sr-90) is a radioactive isotope produced in nuclear fission.
9. Promethium (Pm) – Promethium-145 (Pm-145) is a radioactive isotope often used in nuclear batteries.
10. Technetium (Tc) – Technetium-98m (Tc-98m) is a widely used radioactive isotope in medical imaging.

• These are just a few examples of radioactive elements and their most common radioactive isotopes.
• Many other elements have radioactive isotopes, but they may not be as well-known or commonly encountered.
• Additionally, new isotopes are continually discovered and studied in the fields of nuclear physics and chemistry.